Moin!
> H.Heinold wrote:
> > yesterday I built the root.bin for mips and made an root.tat.gz wie the
> > nfsroot.sh. Then set up nfs-server unpacked the root.tar.gz booted the
> > kernel Hwith the rootnfs. The installer starts, but then busybox claims
> > that it can not determine
> > the rootfs. Any suggestions? I know have too look a little bit in busybox
> > and look too what the nfsroot.sh really does.
Martin Schulze wrote:
> Check utilities/dbootstrap/block_device.c. dbootstrap is trying to
> determine the device that contains the root-fs is but fails.
> block_device() is looking for an entry in /dev/ (as well), which may
> fail.
>
> This information is required to be able to call an equivalent of
> "umount -a" without umounting the root filesystem.
>
> We've just verified that, this is where it fails. block_device gets
> 00:06 as st_dev, but converted into a string results in NULL. I'll
> generate a patch which may solve this problem when I'm awake again.
If you like, you can try this patch:
Index: block_device.c
===================================================================
RCS file: /cvs/debian-boot/boot-floppies/utilities/dbootstrap/block_device.c,v
retrieving revision 1.6
diff -u -r1.6 block_device.c
--- block_device.c 2000/03/17 20:52:41 1.6
+++ block_device.c 2001/07/22 10:30:43
@@ -18,6 +18,42 @@
return 0;
}
+int is_nfs_root (const char *name)
+{
+ FILE *proc;
+ int match = FALSE;
+ char dev[80], dir[80], type[80];
+
+ if (name[0] != '/' && name[1] != '\0')
+ return FALSE;
+
+ proc = fopen ("/proc/mounts", "r");
+ if ( proc == NULL )
+ {
+ perrorBox(_("Can't read /proc/mounts"));
+ return -1;
+ }
+
+ /* Can't use is_fstype() from baseconfig.c because that one doesn't
+ compare the type. -Joey
+ */
+ while ( EOF != fscanf (proc, "%s %s %s %*s %*i %*i\n",
+ dev, dir, type))
+ {
+ if (!strncmp ("/dev/root", dev, 79)
+ && !strncmp (name, dir, 79)
+ && !strncmp ("nfs", type, 79))
+ {
+ match = TRUE;
+ break;
+ }
+ }
+
+ fclose (proc);
+
+ return match;
+}
+
char *block_device(char *name)
{
struct stat s;
@@ -31,6 +67,10 @@
/* recurse /dev to find the appropriate device for *name */
recursiveAction("/dev", TRUE, FALSE, FALSE, match_mount, NULL);
+ if (!my_device_name && is_nfs_root (name) == TRUE) {
+ my_device_name = strdup ("/dev/root");
+ }
+
if(my_device_name) {
buf=strdup(my_device_name);
free(my_device_name);
@@ -39,3 +79,16 @@
return (char *) NULL;
}
+
+/*
+CAVEAT:
+
+ If the root filesystem is mounted as nfsroot, then st_dev seems to
+ be 6 (as in 00:06). There is no device name found, so the string is
+ (null), which lets dbootstrap fail miserably.
+
+ Idea: if that's the case, and /proc/mounts contains something like
+ "/dev/root / nfs", then set the device name as "/dev/root" and pray
+ that dbootstrap won't break somewhere else.
+
+ */
Regards,
Joey
--
Linux - the choice of a GNU generation.
Please always Cc to me when replying to me on the lists.
--
To UNSUBSCRIBE, email to [EMAIL PROTECTED]
with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
